In the 1989 anime film The Three Musketeers: Adventure of Aramis, François is a pivotal figure whose existence is primarily defined by his role in the backstory of the protagonist, Aramis. He is introduced as a man who discovers Aramis after she has fallen from her horse, an event that immediately sparks a profound romantic connection between them. This meeting is characterized as love at first sight, leading to a period of shared happiness for the couple.

François is not a character who participates in the main action of the film. His entire significance lies in the tragedy that befalls him. He is killed by agents of the film's antagonists, Manson and the Iron Mask. This violent act serves as the primary catalyst for Aramis's entire character arc and the driving force behind her motivations. It is directly because of François's death that Aramis swears a solemn vow of revenge. This promise propels her to leave behind her previous life and journey to Paris, where she ultimately reinvents herself by joining the King's Musketeers, concealing her true identity in the process.

His role in the story is therefore that of a tragic motivator. He does not undergo any personal development, as he exists only within Aramis's memories and the events that precede the main plot. His key relationship is solely with Aramis, whom he loved and whose life he irrevocably changed. The memory of François and the quest to avenge him are what drive Aramis to uncover a conspiracy involving Catherine de Médicis, leading her back to the castle of her lost beloved, where she must confront the villain Pizzaro. In terms of notable abilities, the film provides no information, as his character is defined not by what he could do, but by the emotional impact of his death. His primary legacy is the grief and fury that transform Aramis into a Musketeer.